Sökning: "receiver function"

Visar resultat 1 - 5 av 70 avhandlingar innehållade orden receiver function.

1. 1. Receiver Front-Ends in CMOS with Ultra-Low Power Consumption

   Författare :Carl Bryant; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; receiver; front-end; sensor networks; CMOS; ultra-low power; low noise amplifier; mixer; voltage-controlled oscillator; frequency divider; bluetooth;

   Sammanfattning : Historically, research on radio communication has focused on improving range and data rate. In the last decade, however, there has been an increasing demand for low power and low cost radios that can provide connectivity with small devices around us. LÄS MER

3. 2. Methodologies and Tools for the Design and Optimization of Multi-Standard Radio Receivers

   Författare :Delia Rodríguez de Llera González; Mohammed Ismail; Ana Rusu; Patrick Haspel; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Design Methodologies; Receiver; ADC; Multi-Agent System; Behavioural System; Frequency Planning; Multi-standard; Multi-band; Optimization; Information technology; Informationsteknik;

   Sammanfattning :  One of the main challenges posed by 4G wireless communication systems is achieving flexible, programmable multi-standard radio transceivers with maximum hardware share amongst different standards at a minimum power consumption. Evaluating the feasibility and performance of different multi-standard/multi-band radio solutions at an early stage, i. LÄS MER

4. 3. Advanced Analog MMICs for mm-wave Communication and Remote Sensing in 0.15µm mHEMT Technology

   Författare :Marcus Gavell; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GaAs; Point-To-Point; E-band; Modulators; HEMT; Receiver; microwave; Mixers; Geostationary; mm-wave;

   Sammanfattning : Multi-Gigabit per second wireless communication and atmospheric remote sensing for weather forecasts are new applications in the mm-wave frequency spectra. The High Electron Mobility Transistor is an excellent technology for high frequency mm-wave applications. Its low noise and linear performance makes a 0. LÄS MER

5. 4. Analyses of Seismic Wave Conversion in the Crust and Upper Mantle beneath the Baltic Shield

   Författare :Sverker Olsson; Roland Roberts; Hans Thybo; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geophysics; converted waves; Moho; upper mantle; Baltic Shield; tomography; anisotropy; receiver function; Geofysik;

   Sammanfattning : Teleseismic data recorded by broad-band seismic stations in the Swedish National Seismic Network (SNSN) have been used in a suite of studies of seismic wave conversion in order to assess the structure of the crust and upper mantle beneath the Baltic Shield. Signals of seismic waves converted between P and S at seismic discontinuities within the Earth carry information on the velocity contrast at the converting interface, on the depth of conversion and on P and S velocities above this depth. LÄS MER

7. 5. Waveform and Receiver Filter Selection for Wideband Radar Applications

   Författare :Marie Ström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; interference suppression.; detection; waveform design; receiver filter design; Wideband radar; performance evaluation;

   Sammanfattning : This thesis concerns the design of transmitter-receiver chains for widebandradar systems. The transmitter side employs one, or several, highly flexiblesignal generators, which are able to generate signals with a large bandwidth. LÄS MER